UC3705J Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
Texas Instruments UC3705J is a single-channel MOSFET gate driver with 1.5 A source and sink capability, operating from 5 V to 40 V supply in an 8-pin ceramic DIP package. Features totem-pole output for fast gate charge delivery to power switching transistors. Available from stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- UC3705J Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 1.5 A peak source and sink totem-pole output for rapid charging and discharging of MOSFET gate capacitances up to several nanofarads
- Wide 5 V to 40 V supply voltage range enables use across a broad spectrum of PWM controller topologies from low-voltage synchronous bucks to 36 V industrial converters
- 8-pin ceramic DIP (CDIP) package with standard buffer/inverter input allows drop-in replacement in existing MOSFET driver footprints requiring higher reliability
Applications
The UC3705J is used as a gate driver buffer between PWM controller ICs and power MOSFETs in switch-mode power supply stages, motor drives, and DC-DC converter designs operating from 5 V to 40 V rails. It drives single low-side or high-drive-capability switches with 1.5 A peak current, enabling fast turn-on and turn-off times that reduce switching losses at frequencies above 100 kHz. The ceramic DIP package suits industrial and mil-temp applications where plastic-packaged drivers are not rated for the operating temperature range.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| High Side Driver | NO |
| Input Characteristics | STANDARD |
| Interface IC Type | BUFFER OR INVERTER BASED MOSFET DRIVER |
| JESD-30 Code | R-GDIP-T8 |
| JESD-609 Code | e0 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Output Characteristics | TOTEM-POLE |
| Output Current-Max | 1.5A |
| Output Peak Current Limit-Nom | 1.5A |
| Output Polarity | COMPLEMENTARY |
| Package Body Material | CERAMIC, GLASS-SEALED |
| Package Equivalence Code | DIP8,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| Supply Current-Max | 12mA |
| Supply Voltage-Max | 40V |
| Supply Voltage-Min | 5V |
| Supply Voltage-Nom | 20V |
| Surface Mount | NO |
| Technology | BIPOLAR |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Tin/Lead (Sn/Pb) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Turn-off Time | 0.06 µs |
| Turn-on Time | 0.06 µs |
| Package | Ceramic Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for UC3705J:
Frequently Asked Questions
What peak drive current does the UC3705J provide, and how does this affect MOSFET switching speed?
The UC3705J provides 1.5 A peak source and sink current, which rapidly charges and discharges the gate capacitance of power MOSFETs. For a MOSFET with 10 nC gate charge at 10 V gate drive, the 1.5 A peak current achieves a gate rise time of approximately 7 ns, enabling switching frequencies well above 100 kHz with minimal switching loss compared to using a PWM controller output directly.
How wide is the supply voltage range of the UC3705J, and what converter topologies does it support?
The UC3705J operates from 5 V to 40 V supply, making it compatible with 5 V logic-powered half-bridge drivers, 12 V automotive converters, and 36 V industrial DC bus stages in a single design. This 35 V range covers the majority of low-side MOSFET driver applications without requiring different part numbers for each supply rail.
Why would a designer choose the ceramic DIP package of the UC3705J over a plastic SOIC version in an industrial design?
The ceramic DIP-8 (CDIP) package of the UC3705J offers hermetic sealing and wider operating temperature capability compared to plastic SOIC packages. For industrial motor drives or power supplies operating in environments with high humidity, vibration, or temperature cycling beyond -40 °C to +85 °C, the ceramic package provides the additional reliability margin needed over a product lifetime of 10 years or more.
Can the UC3705J drive both N-channel and P-channel MOSFETs, and what input logic levels does it accept?
The UC3705J has standard TTL-compatible input thresholds and a totem-pole output that sources current on a logic high and sinks current on a logic low, making it suitable for driving N-channel low-side MOSFETs directly from 5 V PWM controller outputs. Driving P-channel MOSFETs requires inverting the gate signal, which the UC3705J's standard buffer polarity supports by connecting the output to a pull-up resistor network referenced to the P-channel gate supply.
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Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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